<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: zhangyajun <448901948@qq.com>
// +----------------------------------------------------------------------

namespace expand;

use think\Paginator;

class Bootstrap extends Paginator
{

    /**
     * 上一页按钮
     * @param string $text
     * @return string
     */
    protected function getPreviousButton($text = "&laquo;")
    {

        if ($this->currentPage() <= 1) {
            return $this->getDisabledTextWrapper($text);
        }

        $url = $this->url(
            $this->currentPage() - 1
        );

        return $this->getPageLinkWrapper($url, $text);
    }

    /**
     * 下一页按钮
     * @param string $text
     * @return string
     */
    protected function getNextButton($text = '&raquo;')
    {
        if (!$this->hasMore) {
            return $this->getDisabledTextWrapper($text);
        }

        $url = $this->url($this->currentPage() + 1);

        return $this->getPageLinkWrapper($url, $text);
    }

    /**
     * 页码按钮
     * @return string
     */
    protected function getLinks()
    {
        if ($this->simple)
            return '';

        $block = [
            'first'  => null,
            'slider' => null,
            'last'   => null
        ];

        $side   = 3;
        $window = $side * 2;

        if ($this->lastPage < $window + 6) {
            $block['first'] = $this->getUrlRange(1, $this->lastPage);
        } elseif ($this->currentPage <= $window) {
            $block['first'] = $this->getUrlRange(1, $window + 2);
            $block['last']  = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
        } elseif ($this->currentPage > ($this->lastPage - $window)) {
            $block['first'] = $this->getUrlRange(1, 2);
            $block['last']  = $this->getUrlRange($this->lastPage - ($window + 2), $this->lastPage);
        } else {
            $block['first']  = $this->getUrlRange(1, 2);
            $block['slider'] = $this->getUrlRange($this->currentPage - $side, $this->currentPage + $side);
            $block['last']   = $this->getUrlRange($this->lastPage - 1, $this->lastPage);
        }

        $html = '';

        if (is_array($block['first'])) {
            $html .= $this->getUrlLinks($block['first']);
        }

        if (is_array($block['slider'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['slider']);
        }

        if (is_array($block['last'])) {
            $html .= $this->getDots();
            $html .= $this->getUrlLinks($block['last']);
        }

        return $html;
    }


    /**
     * 渲染总页数
     * @return mixed
     */
    protected  function getAllcount($total){
        return '<span class="pagination-all-count" style="display: inline-block;margin: 0 15px">共计'.$total.'条</span>';
    }
    /**
     * 渲染每页多少条
     * @return mixed
     */
    protected  function getPaginationCount($url,$size){
        return '<span style="display: inline-block;margin: 0 15px">每页 <select onchange="window.location=this.value" class="form-control"style="border-radius:3px; width:80px;display: inline-block">
        <option value="' . htmlentities($url) . '&pagesize=20">20</option>
        <option value="' . htmlentities($url) . '&pagesize=40">40</option>
        <option value="' . htmlentities($url) . '&pagesize=60">60</option>
        <option value="' . htmlentities($url) . '&pagesize=80">80</option>
      </select> 条</span> ';
    }
    /**
     * 渲染前往页数
     * @return mixed
     */
    protected  function getPage($url,$page,$lastPage){
        return '<span style="display: inline-block;margin: 0 15px">前往 <input id="pageIndex" value="'.$page.'" onchange="changePage('."'". htmlentities($url)."'".','."'". $lastPage."'".')" class="form-control" style="border-radius:3px; width:80px;display: inline-block"> 页 </span>';
    }
    /**
     * 渲染分页html
     * @return mixed
     */
    public function render()
    {
        if ($this->hasPages()) {
            if ($this->simple) {
                return sprintf(
                    '<ul class="pager">%s %s</ul>',
                    $this->getPreviousButton(),
                    $this->getNextButton()
                );
            } else {
                if(strpos($_SERVER['REQUEST_URI'],'hryweb.php')!==false){
                    return sprintf(
                        '<div style="display: flex;
    align-items: center;justify-content: flex-end;">%s<ul class="pagination no-margin"> %s %s %s</ul>%s</div>',
                        $this->getAllcount($this->total()),
                        //halt($this->getPaginationCount($this->url($this->getCurrentPage()),$this->listRows())),
//                    $this->getPaginationCount($this->url($this->getCurrentPage()),$this->listRows()),
                        $this->getPreviousButton(),
                        $this->getLinks(),
                        $this->getNextButton(),
                        $this->getPage($this->url($this->currentPage),$this->currentPage,$this->lastPage())
                    );
                }else{
                    return sprintf(
                        '<ul class="pagination pagination-sm no-margin pull-right">%s %s %s</ul>',
                        $this->getPreviousButton(),
                        $this->getLinks(),
                        $this->getNextButton()
                    );
                }

            }
        }
    }

    /**
     * 生成一个可点击的按钮
     *
     * @param  string $url
     * @param  int    $page
     * @return string
     */
    protected function getAvailablePageWrapper($url, $page)
    {
        return '<li><a href="' . htmlentities($url) . '">' . $page . '</a></li>';
    }

    /**
     * 生成一个禁用的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getDisabledTextWrapper($text)
    {
        return '<li class="disabled"><span>' . $text . '</span></li>';
    }

    /**
     * 生成一个激活的按钮
     *
     * @param  string $text
     * @return string
     */
    protected function getActivePageWrapper($text)
    {
        return '<li class="active"><span>' . $text . '</span></li>';
    }

    /**
     * 生成省略号按钮
     *
     * @return string
     */
    protected function getDots()
    {
        return $this->getDisabledTextWrapper('...');
    }

    /**
     * 批量生成页码按钮.
     *
     * @param  array $urls
     * @return string
     */
    protected function getUrlLinks(array $urls)
    {
        $html = '';

        foreach ($urls as $page => $url) {
            $html .= $this->getPageLinkWrapper($url, $page);
        }

        return $html;
    }

    /**
     * 生成普通页码按钮
     *
     * @param  string $url
     * @param  int    $page
     * @return string
     */
    protected function getPageLinkWrapper($url, $page)
    {
        if ($page == $this->currentPage()) {
            return $this->getActivePageWrapper($page);
        }

        return $this->getAvailablePageWrapper($url, $page);
    }
}
